Ganker perch? Probably not. They usually hang tethered off any player station that accepts outsiders.
It might be a mobile depot.
You can also shoot at those. But once it gets down to 60% shields it goes into reinforced mode and can’t take any more damage for 48 hours (maybe 24, I forget)
One note though. Do NOT shoot at secure containers or loot containers. That will get you blapped by CONCORD in high sec.